Fastening-inserting machine



Feb. 16,1926. 1,573,081

F. L. MACKENZIE FASTENING msmmue moans Filed June 5, 1922 2 Sheets-Sheet '1 Feb. 16 1926. 1,573,081

' F. MACKENZIE V FASTENING INSERTING MACHINE Filed June 5, 1922 2 Sheets-Sheet z u u u ll l Patented Feb. 16, 1925.

UNITE STATES rental -ATENT OFFICE...

FRED Ii. MACKENZIE, OF BEVERLY, I\f[ASSACHUSETTS, ASSIGNCR TO UNITED SHOE MACHINERY CGRPORA'IION, OF 19ATERSON', NEW JERSEY, A CORPORATION OF NEW JERSEY.

FASTENING-INSERTING MACHINE.

Application filed June 3,

T of) 1 :12pm it may concern:

7 Be it lznownthatl, FRED L, hlACKENZTE, a citizen of the United States,residin;g at llev r1 in the county of Essen and State of aclm etts, have invented certain Iniprovemen s in Fastenhag-Inserting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like: reference characters on the drawings indicating like parts in the several figures.

This inventionrelates to means for presenting work pieces to machines for operating'npon them and is illustrated as em? bodied in a fastening-insorting machine of a type used in the manufacture of boots and shoes.

Fastening-inserting 1nachines,'as well as many other machines used in the manufacture of boots and shoes, are often supplied with means arranged to support the work while it is being operated upon and with ineans for feeding the worktoward and past the operatin instruinentalities oi .the machines. 1t is an object of the present invention to provide an improved work support, ot a character welladapted for use in tas tcningdnserting" machines, so organizedthat the work support and theistopping and starting of the machine are controlledby a single controlling member, tor example a treadle', which is displaced to start .the'operation-ot the machine. In the illustrated construction the wot-l; suppornduring the operation of the machine, is sustained by a spring which is automatically compressed when the machine is brought to rest after operating on the Work, thereby withdrawing the work support and permitting thework to be readily removed anda new piece toloe presented.

To facilitate the controlling otthe machine by a single controlling member or treadle, cyclically operating means are provided, in accordance with a feature of the invention, normally disconnected from the work inpport during the operation of the machine but arranged to be connected to the work support when the controller or treadle' is releasedthereby causing thewith} drawal olfithe work suppo e gaszithie machine 1922. Serial LN... 565,7'65.

comes to rest. In accordance with another feature of the invention and, as illustrated, means is provided for locking the work support in withdrawn position, operative, when the controller or treadle is again displaced to start the machine, to release the work support and cause. it to be returned by its spring to its operative position.

In accordance with still another feature of the invention, the illustrated machine is provided with work-feeding means operated preterahlyby the same powertransmitting means which operates the work support withdrawing means. i This work-feeding means, as illustrated, operates in each cycle of operation irrespective of whether the work support withdrawing means is ineffective by reason of being unlocked from the work support or is effective by reason of being locked thereto.

lVhile the invention is disclosed herein as embodied in a fastening inserting machine, it should be noted that in various of its aspects its utility is notlimited to usein connection with such machines.

lVith the above and other objects and features in view the invention will now be described in connection with the accompanying drawings andnpointed out in the claims.

In the drawings,

Fig. 1 is a view in side ,elevationot a machine illustrating one embodiment of the invention Fig. 2 isa detail View of a cam and lever mechanism for operating the work support of the machine 01 Fig. 1;

Fig. is a view in side elevation of the upper parto'f the worksupport showing details of the work feeding means;

Fig. 4 is a similar view taken from the side opposite thatshown in Fig. 3;

Fig. 5 is a detail view of the work support retracting mechanism;

"Fig. 6 is a similar view partly in section looking from the right in Fig. 5; and

.fFig'. 7 is a detail illustrating the manner in which the work is operated upon.

'In the illustratedmachine ,ja staple fastening mechanism is provided for inserting fal'stenings finto...the were, the said mecharally in bearings 18 provided upon a bracket 20 bolted to the standard 22 of the machine. Secured to the upper end of the post 16 is a ap 2- havinga bracket extension 26' upon which is adjustably mounted the combined work support and clinching plateQS. As shown, the bracket extension 26 is provided with a recessed portion to receive the lower end of the member 28 for vertical adjustment, bolts 30 being provided to secure the member fixedly in position on the extension as, the said bolts extending through slots in the member 28. Upon loosening the bolts 30 v the member 28 is adjusted vertically through the operation of the screw threaded nien'iber 32, and after the desired adjustment the bolts are again manipulated to secure the plate 28 fixedly in position on the bracket extension 26. As most clearly shown in Figs. 3 and 1-, the upper end of the member 28 presents an upper horizontal surface at 36 upon which the work may rest while it is being presented to the staple, fastening mechanism, the said member having further a projecting portion shown in dotted lines at 38 in both of the figures which is located directly under the nozzle 12 so that as the fastenings are inserted they may be clinched, if desired, to insure perfect setting of fastenings in the work.

Means is preferably provided for feeding the work over the work supporting surface of the work support, the said feeding means comprising, in the construction shown, a pair of toothed wheels a0 mounted rotatably upon a shaft provided in a plate extension integral with, or fixedly secured to, the cap 2%. It will be clear from an inspection of Figs. 3 and 4: that peripheral portions of the wheels 40 embrace the extension 38 of the work support 28, the arrangement being such that the toothed portions of the wheels 4.0 extend slightly above the work support ing surface 36 of the work support 38 so as to engage with the lower surfaceof the work supported on the work support to effect feeding improvements of the work over he said surface. For rotating the toothed wheels 10 there is provided in theillustrated construction apawl and ratchet mechanism consis ing of the ratchet wheel 46 fixedly securedto the bearing shaft of the wheels l0 so that the a het heel is ans-as feed wheels 40 are also rotated to cause feed ing of the work. For operating on the ratchet wheel 46, there is provided a pawl 18 mounted at 50 upon a bell crank 52, the latter turning freely upon an axis concentrio with the bearing shaft of the ratchet wheel 46, the pawl being held in engagement with the ratchet wheel by a spring indicated at 56. Pivoted to another portion of the bell crank 52 is a link 58 which is oscillated to cause rocking movement of the bell crank 52 whereby intermittent movements rotative in the same direction are transmitted to the ratchet wheel 46.

For locating the work for the insertion of the first fastening there isprovided a gage comprising a member 60 mounted to turn upon an axis concentric with the axis of the toothed feed wheels40, the upper end of the gage member 60 extending above the plane of the work supporting.surface 36, the said gage having a projection 62 on the other side of the point of pivotal support of the gage, the tail or projection 62 being held yieldingly by a spring 66 against an adjustable stop 68, as shown most clearly in Fig. 4 of the drawings. Bymeans of the spring and stop arrangement the gage 60 is held in position to locate the work for the insertion of the first fastenin the ten-' sion of the spring 66 being relatively light so that the gage 60 yields readily in the direction of feeding movement of the toothed feed wheels 40 so as to back down out of the path of the .work as the latter is fed over the work support. As soon as the particular piece of work being operated upon is removed the gage 60 is at once returned to operative gagin position by the spring 66. To facilitate the feeding of the work over the work support there is provided a pair of anti-friction rollers or wheels 70, one on each side of the nozzle 12 arranged to engage theupper surface of the work and mounted to co-operate with the toothed wheels 40 in feeding the work over the'work support. The details of the mechanism thus far described for locating and feeding the work are similar to those shown and claimed in applicants copendin application, Serial No. 290,651, filed April 17, 1919, and issued 011 Nov. 20, 1923, as Patent No. 1,474,373, to which patent reference may be had for a more detailed description of the feeding and gaging mechanisms.

Means is provided in the illustrative con struction for yieldingly supporting the work support during the feeding of the work and the insertion of one or of a pliu'ality of fastenings, as may be determined by the operator. As shown, the spring means referred to comprises a spring surrounding the post 16 and resting at its lower end upon an extension 82 rigid with the bracket go and having its upper end in contact with by the operator.

to Figs. and 0 it will be observed that the met 16 has a reduced rectan 'ular oor-' nwaoei a collarB-l secured adjustably to the post 10 so that upon contact of the collar :84l with the lower end of the upper bearing 18 the work supporting surface 36 will be properly spaced from the lower end of the nozzle 12. It will be clear as the description proc'eeds that the spring is the sole support for the work supporting structure and for the work during feeding movements of the work and during the insertion of the fast-enings by the fastening inserting niechanisln.

Means is preferably provided for retracting the work support against the resistance otthe spring '80 so that work may be readily inserted for the work feeding and fastening inserting operations. In the illustrated construction this means comprises an operating mechanism operativcly related to the lower end of the post 10 construct d and arranged to pull the post downwardly against the tension of the spring; 80 at times determined Referring particularly tion upon which slides a sleeve or box 92 adapted to he reciprocated through a link connection 94 pivoted at 96 to the sleeve and having its other end pivoted to a lever 98 which is arranged to be oscillated by mechanism hereinafter described; Pivoted in a recess 100 in the rectangularcnd 90 otthe post 16 is a pawl 102, a spring 104 being attached to the pawl to press the latter yieldingly in one direction at all times so that when free to more it will always be in position to have its operative end 100 engage with a shoulder or abutment 108 on the inside of the box plate 110, the latter being removable tor the purpose of inspection of the parts and replacenient in case of wear. Slidable inside or". the box or sleeve 92' is a plate 116 having a recess at 118 shaped to provide a cam shoulder 120 on the plate.

At its lower end the plate 110 is pivoted to a rod 12-1 in turn piroted at 126 1) to a clamp 1:28 on the'treadle 1 :30, the latter being: normally held in its upper position of rest by spring 1232. For oscillating the lever 98 which is pivoted at M0 on the bracket 20 there is provided connections leading to the coin wheel 1M on the shaft which is the main shaft for the fastening inserting; nieclninisni. As shown, the cam wheel 14% has a face cain 1&8 in which runs a roll mounted on the lever (Fig. 2) pirotcd at .1532 to the machine frame. Pivoted to the outer end of the lever 150, as shown in Fig. 1, is a swireled connector 154 through which passes a rod 156, a spring 158 surrounding the rod and interposed between a collar 1-60 adjustable on the rod loo-and the lower surface of the connector 154:; the purpose of the arrangement .beingto provide a yielding connection between the lever troduced.

her of tastenin to the rightin Fig. 0, t ative end 10.0 in

sleeve chine which, as before stat b x: cyclehthen :iii progressythe work support is 150 and the lever 98,, to which the lower end of the rod 150 is pirotall-y connected, shown at 164'.- At each revolution of the shaft 14' the lever 08 is rocked to ca i reciprocation of the box or sleeve 02. I; the pawl 102 in its forward operative positie-n as shown in. Fig. 6, the shoulder or abutment 108 will engage with the pawl on p the downward movement oi: the box or sleeve and carry the post down with it thus spacing the upper end oi": the work support from the nozzle that wort: may be readil" in T his would take place the termination of each revolution o'i 'the shaft lat-G and the work support would he looked in its lowered worlza ing;- position fter the setting of each individual fastening it pawl 102 were not hold out of engagement h alnitinent 108. Under certain circunn 5; aces this is a desirable mode of operation or the machine for example it it is desired to insert but one stoning into the work. l'lowerer, where i desired to set a nuine into the work it is desi.rable to provide means under the control out the operator for causing the work support to :he held in ope 'ati've position du ng the 1118i ion of a plurality of tastcnin r. and for retracting or lowering the work support to work receiving position as the machineis adapted to 6131. so with a projection on the pawl 102 to can tipporinp 1y ijroni it c path oi the UM h revolution is 111g inserting; operation, no downward increment of the post l 'talies place and hence the work re mains yieldingly clamped against the nonale .d.ini1 a pluraliiy of his hing lose 1 ing ope ons. Soc aronstrnction is especially rentin insur proper feeding; of the work through the co-operation of the toothed teed wheels sit) and the anti- ;triotion rolls 70 on the nor-5 facilitate the feeding-i operations by prmioii 1; counter pressure on the upper surface of the work opposite to "the parts eng :d by the toothed teed wheels lVhen, thei ,.-.ore, the operator wishes to retract or lower the work support he releases the treadle 130 w 1i, innnedh atel returning to its upper position of rest,

carries the plate 11,6 upwardly to position the recess 1.18 opposite the end 170 oi the pawl 102, thereby permitting the soring; 10a

to project the operatireend oi'ithe pawl into the path oi the'almtment 108 on the sleeve or 02and hence at the term nation oi" the ..,e of the maretracted and locked in its work receiving position as the machine is stopped. At this point it may be noted that treadle 130, through rod 190 and other suitable connections, is arranged to control the clutch which transmits power from the drive pulley, 192 of the machine to shaft 1 1-6, so that the ma chine is started when treadle 130 is depressed and is stopped when that treadle is released. As soon as the work has been introduced and positioned against the gage 60 the operator again depresses the treadle 130, starting the machine and moving the plate 116 to cam the pawl 102 to inoperative position and hence during a number of cycles, as determined by requirements of the work and the judgment of the operator, the box 92 is reciprocated without affecting the po sition of the post 16. During one or a pluralit 7 of cycles of operation, the work support supported by the spring to press the work against the feed rolls on the nozzle of the fastening inserting mechanism.

lVhile the operating means for the toothed feed wheels 10 may be provided in any desired manner by connections with the driving shaft 1416, a simple construction is that which provides an extension from the oscillating lever 98, saidextension being shown at 180, Fig. 1, of the drawings, as provides with a slot 182 along which the outer end of the link 58 is adjustable so as to provide an adjustable throw to the pawl carrying lever 52. It will be clear that upon each downward'movement of the outer end of the lever 98 the pawl 48 will be actively operated to effect a step movement of the ratchet wheel 16 and, therefore, of the toothed feed wheels 10 and that upon each upward movementof the outer end of the lever 98 the said pawl will be retracted, riding over the teeth of the ratchet wheel 16 to a new position of engagement preliminarily to another feed movement of the feed wheels. The arrangement of the parts, therefore, is such that the piece of work is given a final feed ing movement at the same time that the work support is retracted downwardly and locked in its work receiving position, both these operations following the insertion of the fastening into the work at atime when the work support is held firmly against the nozzle of the fastening inserting means. lVhile the spring 80 is depended upon to support the work support during feeding operations and during the insertion of fastenings it does not have'to bean excessively strong spring but one that will maintain contact of the feed wheels with the work just firmly enough to insure proper feeding of the latter. Because of the spring 80 in the work support the feeding means, which comprises a feed roll onthe work support, is self-adjusting with respect to the work which may vary somewhat in thickness.

The construction thus provides for a substantially uniform pressure on the work within the usual practical limits, such uniformity of pressure being a matter of the greatest importance in securing uniformity in the feeding operations, it being clear that failure of the feed roll to engage the work with sufficient pressure would result in imperfect and irregular feeding of the work. In the matter of resisting the operative stroke of the driver which drives the fastening into the work, it is obvious that the inertia of the relatively heavy work support is such as to insure proper clinching of the fastening during the instantaneous impact of the driving tool.

In the drawings there is illustrated the operation of securing together two pieces of work having beveled or overlapping portion, most clearly shown in Fig. 7. It 13 obvious, however, that the invention may have other uses than that indicated and that the invention as a whole, as well as its various important features may have other uses and applications than that described.

As before stated, in operating with the ma chine, the operator first places the work against the gage 60 and upon the work supporting surface 36at a time when the work support is locked in its retracted work receiving position. The .treadle 130 is then depressed immediately releasing the post 16 so that the latter is moved upwardly by the spring 80 to clamp. the work against the rolls on the nozzle 12, continued depression of the treadle 130 resulting in throwing in the power means because of the rod connection 190 leading up to the cam control mechanism for the. power pulley 192 on the main shaft 146. Throwing in of the clutch is followed by the insertion of a fastening,

and then by a feeding operation and the insertion of another fastening, and this is repeated as long as the treadle is depressed.

Having described the invention, what is claimed as new and desired'to be secured by Letters Patent is 1. In a fastening inserting machine having a guiding member through which the fastenings are driven, the combination of a roller mounted on the guiding member in position to engage the work to serve as a movable abutment therefor, a work. support, afeed roll mounted on the work sup port to eo-opeiate with the roller for feeding the work across the upper end of the work support, spring means operative to maintain the roll constantly in contact with the work during a series of fastening inserting operations, and power means for retracting the work support against the opposition ofthe spring to work receiving position.

2. In a fastening inserting machine having a guiding member through which the fastenings are driven, the combination of a roller mounted on the guiding member in position to engage the work to serve as an anti-friction abutment therefor, a work sup port, afeed roll mounted on the work support to cooperate with the roller for feeding the work across the upper end of the work support, spring means operative to maintain the roll constantly in contact with the work during a series of fastening in- 'erting'operations, and means for retracting the work support to work receiving position and looking it in such position.

3. In a fastening inserting machine having a guiding member through which the fastenings are driven, the combination of a roller mounted on the guiding member in position to engige the work to serve as ananti-friction.abutment therefor, a work support, a feed roll mounted on the work support for co-operat-ing with the roller in feeding the work across the upper end of the work support, spring means operative'to maintain the roll constantly in contactwitl the work during a series of fastening inserting operations, and means automatically operative to retract the work support against the opposition of the spring to work receiving position.

4-. In a fastening inserting machine lliLV'? .ing 7 are driven, the combination of a roller mounted on the nozzle in posit-ion to engage the work, a work support, a feed roll mounted on the work support and arranged for co-operation with the roller: for. feeding the wor: across the upper end of the V/OI'lC support, spring means operativeto maintain V the roll constantly in contact with the work during a series of fastening inserting operations, and means under the control of the operator for automatically retracting the work support against the opposition of the spring to work receiving position.

5. In a machine of the class described, a work support, means mounted on the work Support for feeding the workover the upper enc thereof, sprii'igmeans for sustaining the work support in work supporting and feed 'jing position, and means for retracting the work support and. looking it in work receiv ing position.

(5. In a machine of the class described, a work support, feeding means mounted on the work support for feeding the, work across the upper surface thereof, spring means for supporting the work support in work 511131301tl11g and feeding means intermittently operable for moving the work support to work receiving position, and manually operable meansfor rendering the last mentioned means operative to retract the work support and lock it in workreceiving position.

7. In a machine for operating on work, a

a nozzle through which the fastening-s mally operative to maintain the work position,

work support, means carried by the work support for feeding the work across the upper surface thereof, means for yieldi'ngly maintaining the Work support in work sup porting and feeding position, and means for automatically retracting the work support against the opposition of said maintaining means to permit the introduction of the work support, means carried by the work support for feeding the work across the upper surfacethereof, means for yieldingly maintaining the Work support in work supporting and feeding position, means for retracting the work support to work receiving position and locking it in said position, and

a manually operable member for controlling said last mentioned means.

10. In a machine of the class described, a

work support comprising feeding means for moving the work over the work supportii'ig surface of said support, spring. means normally operative to maintain the work support and the work feeding means both in work supporting and work feeding posit ons, and power means rendered operative by the operator to compress the spring means to cause the Work supportto move to work receiving position. i

11. In a machine of the classdescribed, a work support comprising feeding means for moving the work over the Work supporting surface of said support, spring means .norsupport and the work feeding meansboth in work supporting and work feeding posh tions, means automatically operative to compress the. springto move the work support to work receiving position, and a manually operable member for controlling the last mentioned means.

12. In a. machine of the character described, a work support comprising a feed roll at the upper end thereof to feed work across the work supporting surface of the support, a spring for maintaining the work support in its work clamping position in which the, feed roll is operative to feed the work, power loperated means intermittently operable to retract the work support against the tension of, the spring, and a manually operable member for rendering the last m tioned means operative at the will of the operator whereby the work support may be moved to work receiving position after any given number of cycles ofop'erations of the' machine.

constantly in work throughout a plurality oi; cycles ot the ma- 13. In ama'chine of the class described, a work support,"spring means serving as"the" sole means 5 for yieldingly' niaintai'ningthe work support in work clamping position, power means for retracting the work sup port to workreceiving position and for locking it in said position, and a controller manually operable for causing connection of the power means with the work support.

14-. In a machine of the'class described, a work support movable between work re ceiving and work clamping positions, spring means for maintaining the work support clamping position chine, a member reciprocable during each cycle of operations of the machine and having a portion adapted to. bero'nnected to the work support for moving the latter to work receiving position, and a manually operable member for causingjthe connection between the reciprocable member and the work support to cause retraction of the 'work{ support at the'will ofthe operator after one or any desired number of cycles of the machine.

15. In a machine of the class described, a

'work support movable between work clamping and work receiving positions, a spring for maintaining the Work support constantly in work clamping position 'during any desired number of cycles of the machine, said work'support'being provided with a latching pawl, a member power operated during each cycle of operations of the maing a nozzle through which the fastenings are driven, the combination of a roll car ried by the nozzle to serve as a movable abutment against which thework may "be clamped, a work support having at its upper end a feedr'oll arranged to co-operate with the roll on the nozzle to" feed the work acrosst-he' work supporting surface of the work support, a spring formaintaining the work support constantly in work clamping position during any desired number of cycles of operation of the machine, a member power operated tocOm'pressthe spring and to cause the work support to move to work receiving position,'and -a manually operable member for determining the time of operation of the power operated member.

work I support work clamping 1 position and entirely sustaining the work support during'one or a plurality of operations on the work,'and means controlled by the operator as to its time of operationror locking the work support in work receiving posi- 18. In a machine of the class described, a work support and an abutment against which the work is clamped, a spring for moving the work support to work clamping posi- 'tion and entirely sustaining the work sup- 1neans with the work support.

19. In a 'machine of the class described, a work support and an abutm'ent' against which the work is clamped, a spring for moving the work support to work clamping position and entirely sustaining the "work support continuously in work clamping position during a plurality of operations on the work, a treadle, power means for locking" the work support in worku'eceiving position, and connections between the treadle and the power means for rendering the latter operative atthe will of the operator.

20. In a machine of the class described, a worlcsupport, a spring for lifting the work support and entirely sustaining the support in work clamping position, power means for moving the work support to work receiving position and maintaining it in such position while the machine is at rest, and manually operable means for releasing the'w ork support topermit it to move up i wardly toward clamping position'under the action of said spring. r

21. In a machine for operating on work, a work support, a spring serving as the sole means for supporting the support during one or a plurality of operations on the work, means for compressing the spring to retract thework support and to lock it in work receiving position, and a manually controlled cam member for unlocking the work support thus permitting it to move to work clamping position.

22. In a machine for operating on work, a work support, a spring serving as the sole means for maintaining the work sup-' port in work operating position, power operated means for locking the support in lowered position against the action of the spring, and manually operable means for preventingat the will of the operator effective operation of said power means.

23. In a machine of the class described, a work support movable-between work receiving and work clamping positions, a

spring for liftingthe work" support to work clamping position and serving as the sole means for maintainingthework inwork clamping position, a pawl carried by "the work support, a power operated member having an abutment for engagingthe pawl whereby the work support is locked in. work receivin position, starting mechanism for the machine, and a manually operable member for moving the pawl to unlocking position and subsequently actuating said start ing mechanism.

24:. in a machine of the class described, a work support movable between work r ceiving and work clamping positions, a spring for lifting the-work support to work clamping position and serving as the sole means of maintaining the work in work clamping position, a pawl carried by the work support, a power operated member having an abutment for engaging the pawl whereby the-work support is locked in work receiving position, starting mechanism for the machine, and a manually operablei memher for moving the pawl to unlocking position and maintaining it in such position for one orfor a plurality of operations on the work.

25. In a machine of the class described, a work support movable between work receivin and work clam )ll1 aositions a spring for lifting the work support towork' clamping position and serving asthe sole means of maintaining the work 111 work clamping position, a pawl carried by thework support, a power operated member having an abutment for engaging the pawl whereby the work support islockecl in work receiving position, starting mechanism tor the machine, a cam member for controlling the pawl, and a manually operable memberfor operating the pawl and for startingthe machine in operation. v

26. In a machine of the class described, a work support movable between work rsreiving and 'work' clamping positions, a spring for maintaining the work support in work clamping position, power means for moving the work support to work receiving position and locking it in that position, and manually operable means for preventing the operation of said locking means throughout a plurality of cycles of operations of the machine.

27. In a machine of the class described, a work support, means mounted on the work support for feeding the work over the upper end thereof, spring, means for sustaining the work support in work supporting and feeding positions during one or a plurality of cycles of operationof the machine, and power means rendered operative by the operator for retracting the work support against the opposition of the spring to work receiving position.

28. In a machine of the class described,

port in workreceiving position, and means for releasing the work support to present the work in the operative plane and to condition thework feeding'means for eli'ective operation in feeding the work over the support.

30. In a machine of the classdescribed, work support comprising means for feed ingv the work over the upper end thereof, spring'means for supporting the work support to engage the feeding means continuously with the work with a yielding pressure sufiicient to insure proper feeding thereof throughout aplurality of cycles of the machine, and manually controllable power means for terminatingthe work feeding operations at the will-of the operator.

31. In a machine of the class described, a work support, means mounted on the work support for feeding the work along the upper end thereof, spring means for sustaining the work support in work supporting and feeding positions, and manually controllable power means for compressing the spring and terminating the feedingof the Work at the will of the operator. i

32. In a machine of the class described, a work support, a spring serving as the sole means for supporting the work support in work supporting position, power means operable tor movii the work sup port to work receiving position, and manually operable means for rendering the last mentioned means operative to retract the work support.

33. In a machine of the class described, a work supportcomprising feeding means for moving the work over the work supporting surface of said support, spring means normally operative to maintain'the work support and the work feedingn'ieans both in work supporting and work feedingpositions, means automatically operative to compress the spring means to cause the work support. to move towork receiving position and to lock it in such-position, and a: manually operable member for releasing the work support from its locked position.

3%. In a fasteninginserting machine, a work support, a feed roll mounted: on the support in work sup-- work support for feeding-the work across the upper end thereof, spring means operative to maintain the roll constantly in contact with the work during a series of fastening inserting operations, power meansfor retracting the work support to work receiving position, and a manually operable member for releasing the work support permitting it to move to position for the first fastening prior to a work feeding movement of the feed roll.

85. In a fastening inserting machine, a work support, means mounted oh the work support for feeding the work across the up per end thereof, means operative to maintain the feeding means constantly in operative relation to the work during a series of fastening inserting operations, meansautomatically operative to retract the work support to work receiving position, and manual 1y operable means for releasing the work support permitting in to-move to position for the first fastening prior to ajwork feeding movement of the feeding means.

' 36. In a fastening inserting machine, work support, a spring serving as the sole supporting means for the work support during the insertion of, one or ofa plurality of fastenings into the work on the work support, power means having connections for retracting the work support to work receiving position and locking it in such position, and starting means for controlling the power means and for releasing the work support.

37. In a fastening inserting machine having a nozzle through which the fastenings are driven, the combination of work supporting and feeding means for presenting the work in successive steps in operative relation to the nozzle, power means for retracting the work supporting and feeding means and locking the same in work receiving position, a starting means for controlling the power means and for releasing the work supporting and feeding means so that the latter may present the work to the nozzle and feed the work thereto for the insertion of successiv'e fastenings.

In a machine of the character scribed comprising defastenmg unsertmg mechanism, the combination of a work sup-.

' port movable from work receiving to work clamping position with respect to said mechanism, a spring serving as the sole means for supporting the work support during the insertion of fastenings, power means for retracting the work support to work receiving position, and starting means for controlling the power means and for releasthe work support so that it may move from work receiving to work clamping position.

39. In a machine of the character described comprising fastening inserting mechanism, the combination of a work support movable'from work receiving to work clamping relation with respect to said mechanism, work feeding means mounted on the work support for feeding the work over the work supporting surfaces thereof, a spring serving as a sole means for supporting the work support during the feeding of the work and theinsertion of fastenings, power means for retracting the work support and looking it in workreceiving position, and a treadlc for controlling the power means and having connections for releasing the work support so that it may move to work clamping position.

a0. In a machine of the character described comprising fastening inserting mechanism, the combination of a work support movable from work receiving to work clamping position with respect to said mechanism, a spring serving as the sole means for supporting the work support during the insertion of fastenings, power means for retracting the work support and locking it in work rece' ing position, and

starting means for controlling the power means and for releasing the work support so that it may move from work receiving to work clamping position. 7

4.1-111 a machine of the character dcscribed comprising fastening inserting mechanism, the combination of a work support movable from work receiving to work clamping relation with respect to said mechanism, work feeding means mounted on the work support for feeding the work over the work supporting surfaces thereof, a spring serving as a sole means for supporting the work support during the feeding of the work and the insertionof fastenings, power means for retracting the work support and looking it in work receiving position, and a treadle for controlling the power means and having a connection for releasing the work support so that it n'iay move to work clamping positioi'i.

4-2. In a fastening inserting machine having a nozzle through which thefastenings are driven, the combination of a roller mounted on the nozzle in position to engage the -work,,a work support. over which the work is fed,a feed roll mounted on the work support and arranged to co-operate with the roller in feeding the work, spring means for pressing the feed roll toward the roller so that the Work between the roller and feed roll is constantly engaged with su'llicient pressure to insure proper feeding thereof, and means for retracting the feed roll and locking it in retracted position so that work may be readily introduced for the feeding and fastening inserting operations.

48. In a machine of the class described, a work supporting member, a feed roll mounted on said member, a roller mounted iT l) above the Work supporting member and arranged to cooperate with the feed roll in feeding the Work over the Work supporting member, a spring for moving the feed r011 toward the roller to cause the Work to be clamped between the feed roll and roller with sufficient pressure to insure proper feeding thereof, and means for retracting the feed roll and locking in retracted position so that Work may be readily in- 10 troduced for feeding operations.

In testimony whereof I have signed my name to this specification.

FRED L. MACKENZIE.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,573,081, granted February 16, 1926, upon the application of Fred L. MacKenzie, of Beverly, Massachusetts, for an improvement in Fastening-Inserting Machines, errors appear in the printed specification requiring correction as follows: Page 2, line 59, for the Word improvements read mooemeats; page 4, lines Set and 85, for the Word portion read portions, page 5, line 21, claim 3, for the compound Word cooperatinggf read :0- opcmtz'oa; page 8, line 22, claim 35, for the Word in read it,'.and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 8th day of June, A. D. 1926.

[SEAL.] M. J. MOORE,

Acting Uom lm'ssioncr of Patents. 

